Intertek Shanghai (Notified Body number: NB 0012) has been officially designated as Notified Body by both the Directorate General of Standards and Metrology (DGSM) and GCC Standardization Organization (GSO) for Oman Technical Requirements for Gas Appliances and their Accessories.

According to Oman Directorate General of Standards and Metrology (DGSM) Administrative Decision No. 3 of 2025, dated 30 December 2025, the Oman Technical Requirements for Gas Appliances and their Accessories will be enforced in accordance with the following implementation schedule.

As a joint program with GSO G-mark scheme, two certificates, valid for 3 years, shall be issued simultaneously on the basis of the documentation submitted for one product certification application. One is for GSO Member State G-mark (MS-GA certificate) and the other is for Oman Certificate of Conformity (OM-GA Certificate). Both Initial Factory Assessment and Routine Follow-up Factory Inspection are also required per factory location.

Intertek Testing and Certification for Gas Appliances

Intertek has rich experience and widespread acceptance in the gas appliance testing and certification field. Its certification services cover multiple areas, such as North America, Europe, Australia, Singapore, Hongkong, Middle East and other “One Belt One Road” countries. In China, Intertek had provided local certification services which involve testing and certification to gas appliances for more than 20 years.